TWO - DIMENSIONAL DIFFERENCE - HISTOGRAM MODIFICATION BASED ON REVERSIBLE DATA HIDING

Both information hiding and compression are very essential technologies in the field of image pr ocessing. It seems that there is no relationship between information hiding and compression mechanisms emphasize the compression ratio. Now a days the data security and data reliability are the two difficult areas for study. In this paper, present a nove l lossless data hiding scheme based on histogram modification. This technique is based on differences of adjacent pixels for embedding data and has more hiding capacity compared to existing methods. The number of message bits that can be embedded into an i mage equals the number of pixels associated with peak point. The experiment conclusion and presentation comparison are presented to express the validity of the proposed algorithm.